My son is all enamored with this horrible game called "kick the buddy." It involves a rope dummy that makes sounds and says stuff. You can *kill* him various ways including weapons, animals, guns bombs, weather effects plants etc etc. Its for the cell phone (I know they have it on android. I really hate it for a couple of reasons. Basically, as you beat him up you get money, and every so often you get gold. You have to watch a lot of ads, (more so than other stupid closed source cell phone games) and if you don't want to it is $7.00 a week for the dumb thing. (well, okay $6.99)
He said he saw it on youtube. I think it is popular because of marketing, not because it is particularly good. Also the game play is very easy and the game is very sandbox style without levels so you can unlock things in whatever order you want.